Particle-based model shows complex rearrangement of tissue mechanical properties are needed for roots to grow in hard soil
Fig 4
Simulation of unimpeded growth of Arabidopsis thaliana roots using axial strain rate data, cell length data and cell division rate data derived from [20].
(A) Simulations of the growth of a root for 50 hours. Colors indicate the number of cell divisions from the beginning of the simulation. Blue cells have not divided during the simulation. Red cells have divided three times. Simulations were initiated with particles distributed on a 2D cartesian lattice. (B) Comparison between model and experimental data. Comparison between experimental and SPH predictions for cell division rate (Left). Comparison between experimental and SPH predictions for axial strain rate (Center). Comparison between experimental and SPH predictions for cell lengths (Right). Symbols are mean ± SE over 40 consecutive time steps. Experimental observations are represented by orange dashed lines and numerical simulations by blue solid lines.